Improvement in metallic laths



' J. V. HENNE'SSEYn Mvetallio-Lath.

.No. 214,038. Patented April 8', 187B.

JOHN V. nennnssnr, or ALBANY, new YORK.

HMPROVEMENT n WIETALMC tern-is.

Specifieationfqrmingpurt of Letterslgteptlgo, 21d,038, deted April 8, 1879; epplicetionhlod J dnuary 30, 1879'.

To all whom it may concern:

Be it known that I, J orm V. HENNESSEY, of Albany, in the county of Albany and State .of New York, have invented certain new and useful Improvements in Metallic Leths; and

. 1 do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it eppert-eins to meke and use the some, reference being had to the accompanyin gdraw'ings, endto letters of ref ence marked thereon; which form a part of this specification. f

This'inveotiou relates to lsths which may be formed of meta-l, paper, or other suitable ma.- terial, having a series of strips of any geometrical pattern depressed and elevated from the sert'ace of the sheet to form, key,

and corrugations in the some to giveadditional strength, as will he hereinafter more fully described. I

In the annexed drewings Figurel is evertical section. Fig. 2 is a loz'lgitudis'al section.- and Fig. 3 is a partial elevated view.

In the drawings, D represents the frame,

' which forms no part of this invention, and is ble means. lhese strips form aclinch or key for plastering in anyplestic materiel-such as mortar, plaster, cement, aspheltum, &c.

The strips B are raised and depressed 21.

suitable distencein material, and e space is left between the series, in which a groove, 0, is formed running in an opposite direction to the raised and depressed portions.

The raised and depressed parts give admlitional strength-to the material inoue direc tion, and thegroowes 0 add to the strength in the opposite direction, so that the sheet when placed in position, while it may be made of very light materiel, will-"be suficiently rigid for all purposes desired, and upon which can be placed a surface of any plastic material,

thus greatly'red ucing the cost'end time of the lahoreuendu furnishing emmemmfll jltifdole for sustaining the plaeteripg or ceiling has. those now in use. I I Having thus fully described. my invention,

what 1 claim as new, anddeeire tosecure by Letters Patent, is-

A metallic or other lath providedwith a,

series of strips eliernatelyrcised and depressed from-the surface, and connected at both ends, and having the grooves C, snbstantiollyns and for the purposes herein set forth.

' In testimony that I claim the foregoing as my own I have hereto utilized my signature in presence of two Witnesses. 1 x JOHN mnnssesser.

Witmasses TEoMAs'J. Hermessnr, THomAs A.-HENNESSEY- 

